Reynolds Electronics Canon City, Co. 81212 http://www.rentron.com

Tel: (719) 269-3469 Fax: (719) 276-2853 e-mail:webmaster@rentron.com

Symbol Parameter Conditions Min Typ Max Unit

Vcc Operating supply voltage 1.5 - 12 V Icc Peak Current - 5 9 mA Vin Input High Voltage IData=100Ua (High) Vcc-0.5 - Vcc V Vii Input Low Voltage IData=0Ua (Low) - - 0.3 V Fo Absolute Frequency 314.8 315 433.9 MHz

Po RF Out Power Into 50Ω -3 0 +2 dBm Modulation Bandwidth - 5 - KHz

Tr Modulation Rise Time - - 100 uS Tf Modulation Fall Time

External Encoding

- - 100 uS Notes : ( Case Temperature = +25C+/-2C Test Load Impedance = 50 Ω ) Application Circuit: 4-bit RF transmitter using the Holtek HT-12E encoder

ITot Operating supply voltage - 4.5 - Data = +200 uA ( High )I Vcc-0.5 - Vcc V V Data Data Out I Data = -10 uA ( Low ) - - 0.3 V

Electrical Characteristics Characteristics SYM Min Typ Max Unit Operation Radio Frequency FC 300 - 434 MHz Sensitivity Pref -106 dBm Channel Width +-500 KHz Noise equivalent BW NEB 5 4 KHz Baseboard data rate 3 Kb/s Application Circuit: 4-bit RF Receiver using the Holtek HT-12D decoder

TWS-434 TRANSMITWS-434 TRANSMITTER

13.5mm

14.5mm

2.54mm

16.1mm

pin 1 : Vccpin 2 : Vccpin 3 : Gndpin 4 : Gndpin 5 : RF Outputpin 6 : Code Input

Frequency 300 - 433MHz

Moulation : AM ( Code )Supply Voltage : 1.5v - 12 v dcRF Output Power : 8mW

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25.4mm

43.5mm

10.5mm

11.5mm

pin 1 : Gndpin 2 : Digital Outputpin 3 : Linear Outputpin 4 : Vccpin 5 : Vccpin 6 : Gndpin 7 : Gndpin 8 :Ant ( About 30 - 35 cm )

Frequency 300 - 433MHz

Moulation : AMSupply Voltage : 4.5v - 5.5 v dcSensitivity : 3uVrmsOutput : Digital & LinearApplication : Radio Remote Control

RWS-434 RECEIVER

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NEW !

Connections: 1. RWS Gnd to header-pin #1 2. RWS Vcc to header-pin #3 3. RWS Digital-Output to header-

pin #2 HT-12E encoder data transfers to HT-12D data-pins via RF transmission. VT-pin transitions from low to high on valid reception & address. More detailed information is available from http://www.rentron.com For 8-bit RF remote control, substitute the HT-12D with HT-648L decoder.

Connections: 1. TWS Gnd to header-pin #3. 2. TWS Vcc to header-pin #1. 3. TWS Code-Input to header-

pin #2. NOTE: /TE can be switched to ground to provide transmit on button-press. More detailed information is available from http://www.rentron.com For 8-bit RF remote control substitute the HT-12E with HT-640 encoder. Maximum range obtained with 50-ohm antenna, 35cm in length on TWS & RWS.

1 2 3 4

A

B

C

D

4321

D

C

B

A Title

Number RevisionSize

Orcad A

Date: 12-Jun-2001 Sheet of File: C:\CAD\SCHEMATICS.Ddb Drawn By:

33K

18

17

16

15

14

13

12

11

109

8

7

6

5

4

3

2

1 VCC

VT

OSC2

OSC1

DIN

D3

D2

D1

D0GND

A7

A6

A5

A4

A3

A2

A1

A0

+5

NPN

10K

RELAY

DIO

DE

+5

COIL

Vin1

GN

D2

Vout 3

LM2940 OR LM7805

+1uF

+100uF

+5

+9

GND

HT-12D

750K

18

17

16

15

14

13

12

11

109

8

7

6

5

4

3

2

1 VCC

DOUT

OSC2

OSC1

/TE

D3

D2

D1

D0GND

A7

A6

A5

A4

A3

A2

A1

A0

HT-12E

/TE

D3

D2

D1

D0

SAMPLE RELAY DRIVER CIRCUIT FOR RECEIVER

SAMPLE +5 VOLT REGULATOR CIRCUIT

TRANSMIT ENABLE

TO DECODER IC OUTPUT

D3 OUTPUT

D2 OUTPUT

D1 OUTPUT

D0 OUTPUT

RWS-434

1 2 3 4 5 6 7 8

VCC

AN

TEN

NA

TWS-434

1 2 3 4 5 6

AN

TEN

NA

VCC

DATA OUT TO TRANSMITTER

DATA IN FROM RECEIVER MODULE

1 2 3 4

A

B

C

D

4321

D

C

B

A Title

Number RevisionSize

Orcad A

Date: 12-Jun-2001 Sheet of File: C:\CAD\SCHEMATICS.Ddb Drawn By:

D0

D1

D2

D3

D4

D5

D6

D7

VCC

TRANSMIT ENABLE

VCC

OUTPUT TO TRANSMITTER

VALID TRANSMIT OUTPUT

D8 OUTPUT

D6 OUTPUT

D5 OUTPUT

D4 OUTPUT

D3 OUTPUT

D2 OUTPUT

D1 OUTPUT

DO OUTPUT

8-BIT TRANSMITTER

8-Bit Encoder/Decoder Circuits

NPN

4.7K

RELAY

VCC

TO DECODER OUTPUT

DRIVE CIRCUIT, 1 = ON, 0 = OFF

1N41

48

MOTOR

VCC

SUBSTITUTE MOTOR FOR OTHER LOAD TYPES AS NECESSARY

1

2

3

4

5

6

7

8

9

10

11

12 13

14

15

16

17

18

19

20

21

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23

24

VCC

D0

D1

D2

D3

D4

D5

D6

D7

DOUT

TE

OSC1

OSC2

GND A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

VCC1

2

3

4

5

6

7

8

9

10

11

12 13

14

15

16

17

18

19

20

21

22

23

24

VCC

D0

D1

D2

D3

D4

D5

D6

D7

VT

DIN

OSC1

OSC2

GND A0

A1

A2

A3

A4

A5

A6

A7

A8

A9

VCC

HT-640

DATA INPUT FROM RECEIVER

8-BIT RECEIVER

390K390K

HT-648L OR HT-658

CONNECT OUTPUT FROM ENCODER IC TO INPUT OF TRANSMITTER CONNECT OUTPUT FROM RECEIVER TO INPUT OF DECODER IC

ENCODER AND DECODER ADDRESS PINS MUST BE AT THE EXACT SAME LOGIC LEVELS FOR THE ENCODER TO CONTROL THE DECODER

THIS ALLOWS A SINGLE TRANSMITTER TO CONTROL MULTIPLE RECEIVERS BY MANIPULATING THE ADDRESS PINS OF THE ENCODER IC TO MATCH THAT OF MULTIPLE RECEIVER DECODER ICS